IDENTIFIERS

  • Current Taxon Name (Soil Name): Lakoma
  • OSD
  • Series Extent
  • User Site ID: S2013SD123001
  • User Pedon ID: S2013SD123001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - KSSL
  • Lab Pedon # - 14N0312
  • NCSS Pedon Lab Data NASIS Record ID - 74471
  • Print Date: 5/30/2024

    • LOCATION

  • Location In Web Soil Survey
  • AOI is roughly a square mile and pedon is marked in the center.
  • Location in SoilWeb
  • Location in Google Maps
  • Std. Latitude: 43.5008250
  • Std. Longitude: -99.8823117
  • Datum: WGS84
  • Township: 113N
  • Range: 75W
  • Section: 35
  • PLSS Details: SE 1/4
  • Location Description: Pedon is located 61 miles South and 21 miles East of the Pierre MLRA Soil Survey Office in Pierre, SD.
  • Map Unit: LkC—Lakoma-Millboro silty clays, 6 to 9 percent slopes
  • State: South Dakota
  • County: SD123—Tripp
  • MLRA: 63B—Southern Rolling Pierre Shale Plains
  • Non-MLRA Soil Survey Area: SD123—Tripp County, South Dakota
  • 7.5 Minute USGS Quad: 43099-E8—Ideal, South Dakota

    • PEDON

  • Describers Name: N. Jones, A. Oxford
  • Current Taxonomic Class: Fine, smectitic, mesic Vertic Calciustepts
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: laboratory sampling site
  • Sampled As Information:
  • Soil Name - Lakoma
  • Taxonomic Class - Fine, smectitic, mesic Vertic Calciustepts
  • Taxon Kind - series
  • PSC - 25 to 73 cm.
  • Classificaton Date - 12/11/2013
  • Classifier - A. Oxford
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - ustic
  • Moisture SUBClass - typic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: clayey slope alluvium derived from shale over clayey residuum weathered from shale
  • Landscape: upland
  • Landform: hill
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: summit
  • Slope Complexity: simple
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: weakly coherent moderate weathered shale, unspecified at 73cm with 10 to <45; weakly coherent slight weathered shale, unspecified at 109cm with 10 to <45
  • Geology: Pierre Shale formation. ; Pierre Shale formation.
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: yes

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/14/2013 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - row crop
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    bedrock, paralithic

    weakly coherent

    73 - 159

    —
    Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    cambic horizon

    secondary carbonates

    redox concentrations

    calcic horizon

    paralithic contact

    0—15

    15—31

    31—73

    31—73

    31—73

    73—159

    —-

    —-

    —-

    —-

    —-

    —-
    Setting and Climate
    Slope Slope Length USLE Upslope Length Elev. Corr. Elev Aspect MAP REAP FFD MAAT MSAT MWAT MAST MSST MWST MFFP PE Index Climate Station ID Climate Station Name Climate Station Type
    % m degrees mm mm C mm

    3

    —

    —

    578

    —

    10

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 15 centimeters (0.0 to 5.9 inches); grayish brown (2.5Y 5/2), very dark grayish brown (2.5Y 3/2), moist; silty clay; 3 percent sand; 50 percent clay; weak fine granular structure; moderately hard, firm, moderately sticky, very plastic; 2.0 very fine roots throughout and 1.0 fine roots throughout; 2.0 very fine and 1.0 fine pores; fragments; violent effervescence, by hcl, 1n; slightly alkaline, pH 7.5, pH indicator solutions; abrupt smooth boundary. Lab sample # 14N01631; very moist when described; observed in pit, small
    Bw—15 to 31 centimeters (5.9 to 12.2 inches); light brownish gray (2.5Y 6/2), dark grayish brown (2.5Y 4/2), moist; silty clay; 3 percent sand; 48 percent clay; weak medium subangular blocky structure; hard, very firm, slightly sticky, very plastic; 1.0 very fine roots throughout and 1.0 fine roots throughout; 1.0 very fine and 1.0 fine pores; fragments; violent effervescence, by hcl, 1n; slightly alkaline, pH 7.5, pH indicator solutions; gradual wavy boundary. Lab sample # 14N01632; very moist when described; observed in pit, small
    Bk—31 to 73 centimeters (12.2 to 28.7 inches); light yellowish brown (2.5Y 6/3), olive brown (2.5Y 4/3), moist; very parachannery silty clay; 3 percent sand; 48 percent clay; weak medium subangular blocky structure; hard, very firm, slightly sticky, very plastic; 1.0 very fine roots throughout; 1.0 very fine pores; 2 percent fine prominent irregular weakly coherent cemented strong brown (7.5YR 5/6), moist, masses of oxidized iron with diffuse boundaries in matrix; 10 percent medium distinct irregular weakly coherent cemented carbonate masses with diffuse boundaries in matrix; 9 percent by volume flat angular weakly coherent cemented 5-8-10 millimeter shale, unspecified fragments and 38 percent by volume flat angular weakly coherent cemented 2-3-5 millimeter shale, unspecified fragments; violent effervescence, by hcl, 1n; slightly alkaline, pH 7.5, pH indicator solutions; gradual wavy boundary. Lab sample # 14N01633; very moist when described; observed in pit, small
    Cr1—73 to 109 centimeters (28.7 to 42.9 inches); bedrock; 1.0 very fine roots in cracks; fragments; strong effervescence, by hcl, 1n; slightly alkaline, pH 7.5, pH indicator solutions; gradual wavy boundary. Lab sample # 14N01634; observed in pit, small
    Cr2—109 to 159 centimeters (42.9 to 62.6 inches); bedrock; 1.0 very fine roots in cracks; fragments; strong effervescence, by hcl, 1n; slightly alkaline, pH 7.5, pH indicator solutions. Lab sample # 14N01635; observed in pit, small